EP0505703A1 - Elektromotor mit selbsttätig wirkender Bremse - Google Patents

Elektromotor mit selbsttätig wirkender Bremse Download PDF

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Publication number
EP0505703A1
EP0505703A1 EP92102036A EP92102036A EP0505703A1 EP 0505703 A1 EP0505703 A1 EP 0505703A1 EP 92102036 A EP92102036 A EP 92102036A EP 92102036 A EP92102036 A EP 92102036A EP 0505703 A1 EP0505703 A1 EP 0505703A1
Authority
EP
European Patent Office
Prior art keywords
brake
switch
rotor
electric motor
acts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP92102036A
Other languages
German (de)
English (en)
French (fr)
Inventor
Dieter Hauke
Siegfried Patzelt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0505703A1 publication Critical patent/EP0505703A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
    • H02K7/1021—Magnetically influenced friction brakes
    • H02K7/1026—Magnetically influenced friction brakes using stray fields
    • H02K7/1028—Magnetically influenced friction brakes using stray fields axially attracting the brake armature in the frontal area of the magnetic core
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D59/00—Self-acting brakes, e.g. coming into operation at a predetermined speed
    • F16D59/02—Self-acting brakes, e.g. coming into operation at a predetermined speed spring-loaded and adapted to be released by mechanical, fluid, or electromagnetic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D66/02—Apparatus for indicating wear
    • F16D66/021—Apparatus for indicating wear using electrical detection or indication means
    • F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
    • F16D66/023—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness directly sensing the position of braking members
    • F16D66/024—Sensors mounted on braking members adapted to contact the brake disc or drum, e.g. wire loops severed on contact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/20—Electric or magnetic using electromagnets
    • F16D2121/22—Electric or magnetic using electromagnets for releasing a normally applied brake

Definitions

  • the invention relates to an electric motor according to the preamble of claim 1.
  • a certain inadequacy of such an electric motor is that it is not readily apparent when the wear limit of the brake lining of the brake disc has been reached, so that mechanical damage to the braking device cannot be ruled out.
  • the object of the invention is to make the monitoring personnel aware of the state of wear of the brake lining in good time or to cause the motor to switch off automatically when the wear limit of the brake device is reached.
  • a helical spring 13 is supported on the base 10 of a recess 11 in the laminated core 12 'of the squirrel-cage rotor 12, which acts at its other end on a brake pot 14 with which a magnet armature 15 is firmly connected, which during normal operation of the Motor bears against the end face of the rotor laminated core 12.
  • the brake pot 14 with the magnet armature 15 is assigned a brake disk 16 which is held in the end shield 17 and guided by means of pins 18 and is secured against rotation.
  • the brake disc 16 is mounted in the manner of a bayonet lock in the end shield 17, axially displaceable and provided with one or more brake pads 19.
  • the brake pads can optionally also be attached to the brake pot. For reasons of imbalance, however, it is usually more appropriate to attach the brake pads to the fixed brake disc.
  • the brake disk 16 is assigned springs 20, the other ends of which are supported on the bottom by bores 21 made in the end shield 17 and which allow the brake disk to yield in the axial direction.
  • the displacement of the brake disc 16 is limited by a stop ring 23 attached to the motor shaft 22.
  • the motor shaft 22 is rotatably supported in the brake-side bearing plate 17 by means of a ball bearing 24.
  • a wedge disk 25 is attached to the brake pot 14 and cooperates with the inclined surfaces 26 'in the short-circuit ring 26 of the rotor 12 in a known manner.
  • the brake pot 14 with the magnet armature 15 and the wedge disk 25 is adapted to the contour of the winding head 27 of the stator winding.
  • the brake-side bearing plate 17 is fitted into the motor housing 28 in a conventional manner and is combined with it.
  • the switch 30 can also be arranged on a projection of the end shield 17.
  • the plunger 30 'of the switch 30 is assigned an actuator 29 which is fastened in the brake disc 16.
  • the actuating member 29 is designed as a rivet, the head 29 'of which protrudes into the brake lining 19 as far as the wear limit 31 thereof. (See Fig. 3)
  • the head 29 'of the rivet is continuously ground down until the rivet releases from the brake disc 16 due to the torque exerted on it by the spring-loaded plunger 30' of the switch 30 and drops off.
  • the spring-loaded plunger 30 'of the switch 30 can now perform an upward movement, as a result of which the switch 30 closes a circuit (not shown) for an optical and / or acoustic signal transmitter.
  • the switch 30 can also close the control circuit for the relay which triggers the motor switch, so that the motor is switched off.
  • the switch 30 can also be used to prevent the motor from being switched on again during the braking process.
  • FIG. 2 also shows in particular the arrangement of the pins 18 which prevent the sprung brake disc 16 from rotating.
  • FIG. 3 shows the fastening of the actuating element 29 designed as a rivet to the brake disk 16, the contact plane 32 of the rivet head 29 ′ being flush with the wear limit 31 of the brake lining 19. Basically, there is also the possibility of using a contactless switch for the wear indicator.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Braking Arrangements (AREA)
EP92102036A 1991-03-05 1992-02-07 Elektromotor mit selbsttätig wirkender Bremse Withdrawn EP0505703A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914106897 DE4106897A1 (de) 1991-03-05 1991-03-05 Elektromotor mit selbsttaetig wirkender bremse
DE4106897 1991-03-05

Publications (1)

Publication Number Publication Date
EP0505703A1 true EP0505703A1 (de) 1992-09-30

Family

ID=6426460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92102036A Withdrawn EP0505703A1 (de) 1991-03-05 1992-02-07 Elektromotor mit selbsttätig wirkender Bremse

Country Status (2)

Country Link
EP (1) EP0505703A1 (enrdf_load_stackoverflow)
DE (1) DE4106897A1 (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0544223A1 (de) * 1991-11-26 1993-06-02 Licentia Patent-Verwaltungs-GmbH Elektromotor mit beim Abschalten des Motors selbsttätig wirkender Bremse
ES2076875A2 (es) * 1993-11-29 1995-11-01 Diaz Gerardo Bisquer Motor-freno.
WO1997009769A1 (en) * 1995-09-06 1997-03-13 Robert Axelsson Brake in an electric motor
EP0800261A1 (en) * 1996-04-04 1997-10-08 Fhp Elmotor Aktiebolag Braking system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19814042C1 (de) * 1998-03-30 1999-07-15 Sew Eurodrive Gmbh & Co Verfahren zum Überwachen des Verschleißes von Bremsbelägen bei Elektromotoren mit Bremse
DE20010741U1 (de) 2000-06-16 2000-08-31 Stromag Ag, 59425 Unna Elektromagnetische Bremse

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2224693B2 (de) * 1971-05-21 1977-10-13 Verschleissanzeigevorrichtung fuer eine scheibenbremse
DE3002270C2 (de) * 1979-02-01 1982-09-23 Ford-Werke AG, 5000 Köln Bremsbelag-Überwachungseinrichtung für Kraftfahrzeuge
DE3407731A1 (de) * 1984-03-02 1985-09-05 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Elektromotor mit automatisch wirkender bremse
DE3825114A1 (de) * 1988-07-23 1990-01-25 Licentia Gmbh Elektromotor mit selbsttaetig wirkender bremse
EP0360779A2 (de) * 1988-09-21 1990-03-28 AUSTRIA Antriebstechnik G. Bauknecht Aktiengesellschaft Vorrichtung zum Abbremsen von Elektromotoren

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1144450A (fr) * 1955-03-30 1957-10-14 Acec Frein incorporé pour moteur électrique
DE1130521B (de) * 1958-07-04 1962-05-30 Siemens Ag Bremslueftmagnet mit Wechselstromerregung
DE7722046U1 (de) * 1977-07-14 1978-04-06 Lukat, Siegbert, 6806 Viernheim Roellchen aus mineralfasern
DE3036091C2 (de) * 1980-09-25 1986-01-30 Hanning Elektro-Werke GmbH & Co, 4811 Oerlinghausen Elektromotor mit selbsttätig wirkender Bremse
DE3935968C2 (de) * 1989-10-28 1993-11-25 Licentia Gmbh Elektromotor mit beim Abschalten des Motors automatisch wirkender Bremse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2224693B2 (de) * 1971-05-21 1977-10-13 Verschleissanzeigevorrichtung fuer eine scheibenbremse
DE3002270C2 (de) * 1979-02-01 1982-09-23 Ford-Werke AG, 5000 Köln Bremsbelag-Überwachungseinrichtung für Kraftfahrzeuge
DE3407731A1 (de) * 1984-03-02 1985-09-05 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Elektromotor mit automatisch wirkender bremse
DE3825114A1 (de) * 1988-07-23 1990-01-25 Licentia Gmbh Elektromotor mit selbsttaetig wirkender bremse
EP0360779A2 (de) * 1988-09-21 1990-03-28 AUSTRIA Antriebstechnik G. Bauknecht Aktiengesellschaft Vorrichtung zum Abbremsen von Elektromotoren

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0544223A1 (de) * 1991-11-26 1993-06-02 Licentia Patent-Verwaltungs-GmbH Elektromotor mit beim Abschalten des Motors selbsttätig wirkender Bremse
ES2076875A2 (es) * 1993-11-29 1995-11-01 Diaz Gerardo Bisquer Motor-freno.
WO1997009769A1 (en) * 1995-09-06 1997-03-13 Robert Axelsson Brake in an electric motor
EP0800261A1 (en) * 1996-04-04 1997-10-08 Fhp Elmotor Aktiebolag Braking system

Also Published As

Publication number Publication date
DE4106897A1 (de) 1992-09-10
DE4106897C2 (enrdf_load_stackoverflow) 1993-05-06

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